Thick film low ohmic chip resistors for current detection
UCR series Datasheet
●Features
1)Very-low ohmic resistance from 11mΩ is in lineup by thick-film resistive element.
2)Resistive element is located at bottom side, which reduces the resistance shift
during mounting process.
3)ROHM's unique structure achieved improvement of heat.
4)ROHM resistors have obtained ISO9001 / ISO / TS16949 certification.
5)Corresponds to AEC-Q200. But UCR006 is preraring.
UCR03 (under 100mΩ or less) are unsupprted.
●Products list
Part No.
Size Rated Power
(70℃)
Resistance
tolerance
Temperature
coefficient Resistance range
Operating
temperature
range
(mm) (inch) (W) (%) (ppm / ℃) (Ω) (℃)
UCR006 0603 0201 0.1 F ( ±1% )
J ( ±5% ) 0～+300 0.100≦R<1 (E24series) -55 ～+155
UCR01 1005 0402 0.125 F ( ±1% )
J ( ±5% )
0～300 0.068≦R<0.100 (E24series)
-55 ～+1550～250 0.100≦R<0.220 (E24series)
0～200 0.220≦R≦0.910 (E24series)
UCR03 1608 0603
0.25 F ( ±1% )
J ( ±5% )
0～250 0.020≦R<0.050 (E24series)
-55 ～+155
0～200 0.050≦R<0.100 (E24series)
0～150 0.100≦R<0.200 (E24series)
0.20 F ( ±1% )
J ( ±5% ) 0～150 0.220≦R≦0.910 (E24series)
UCR10 2012 0805 0.33
F ( ±1% ) 0～250 0.020≦R≦0.047 (E24series)
-55 ～+155
0～150 0.047＜R＜0.1 (E24series)
J ( ±5% )
250±200 0.011≦R＜0.020 (E24series)
0～250 0.020≦R≦0.047 (E24series)
0～150 0.047＜R＜0.1 (E24series)
UCR18 3216 1206 0.5 F ( ±1% )
J ( ±5% )
0～350 0.011≦R<0.020 (E24series)
-55 ～+155
0～200 0.020≦R≦0.039 (E24series)
0～150 0.039＜R＜0.1 (E24series)
* Design and specifications are subject to change without notice.
Carefully check the specification sheet supplied with the product before using or ordering it.
●● Part Number Description
U C R 1 0 E V H J L R 1 0
Part No. Size (mm [inch]) Packaging specifications code Resistance
tolerance
Special
part code
Nominal resistance
UCR
(Thick film low
ohmic chip
resistors)
006 (0603 [0201]) Part No. Code Packaging
specifications
Quantity
/ Reel
Resistance code,3 or 4 digits.
01 (1005 [0402]) F ( ±1% ) S：0.011 ～Resistance
tolerance
+
Specialcode
Resistance
code
03 (1608 [0603]) UCR006 YVP Paper tape
(2mm Pitch) 15,000 J ( ±5% ) 0.091Ω
10 (2012 [0805]) L：0.1Ω
18 (3216 [1206]) UCR01 MVP Paper tape
(2mm Pitch) 10,000 FS,FL,JS ：4 digits
JL ：3 digits
UCR03
EWP
(20mΩ～47mΩ) Paper tape
(4mm Pitch) 5,000
EVP
(51mΩ～910mΩ)
UCR10 EVH Paper tape
(4mm Pitch) 5,000
UCR18 EVH Paper tape
(4mm Pitch) 5,000
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c 2016 ROHM Co., Ltd. All rights reserved. 1/4 2015.01 - Rev.E
UCR series Datasheet
●Chip resistor dimensions and markings
■■ UCR006/01 ■■ UCR03(20mΩ≦R<50mΩ) ■■ UCR10/18
■■ UCR03(50mΩ≦R≦910mΩ)
<Marking method>
There are three or four digits used for
the calculation number according to
IEC code and “R”is used for the
decimal point.
Ex.) 4digits······0.1Ω =R100
3digits······0.1Ω =R10
(Unit:mm)
Part No. (mm) (inch) L W t a b Marking
existence
UCR006 0603 0201
No0.62±0.05 0.32±0.05 0.24±0.05 0.18±0.10 0.22±0.10
UCR01 1005 0402
No1.00±0.10 0.55±0.10 0.37±0.05 0.28±0.10 0.34±0.10
UCR03 1608 0603
No1.60±0.10 0.87±0.10 ±0.50±0.10 0.45±0.20 0.45±0.20
UCR10 2012 0805
Yes2.00±0.10 1.25±0.10 0.55±0.10 0.24±0.20 0.50±0.20
UCR18 3216 1206
Yes3.20±0.15 1.60±0.15 0.55±0.10 0.30±0.20 0.90±0.25
●Land pattern example
(Unit:mm)
Dimensions A B C D
Part No.
UCR006 0.3 1.2 0.5 0.45
UCR01 0.5 1.8 0.5 0.65
UCR03 0.5 2.5 0.9 1.0
UCR10 0.8 3.4 1.3 1.3
UCR18 1.4 4.0 1.8 1.3
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c 2016 ROHM Co., Ltd. All rights reserved. 2/4 2015.01 - Rev.E
UCR series Datasheet
●Derating curve
When the ambient temperature exceeds 70°C, power dissipation must be adjusted according to the derating curves below.
■UCR006/01/03/10/18
●Characteristics (UCR01/03/10/18)
Test items Guaranteed value Test conditions
Resistor type
Resistance See P.1
20℃
Measuring method : Measure Bottom termination
by 4 proves.
Variation of resistance
with temperature See P.1 Measurement：+25/-55, +25/+125℃
Overload ±(2.0％＋0.005Ω) Rated voltage(current)×2.5， 2
Solderability
A new uniform coating of minimum
of 95% of the surface being
immersed and no soldering
damage.
Rosin-ethanol solution25% (Wweight)
Soldering condition：245±5℃
Duration of immersion：2.0±0.5s
Resistance to
soldering heat
±(1.0％＋0.005Ω)
No remarkable abnormality on the appearance.
Soldering condition：260±5℃
Duration of immersion：10±1s
Rapid change of
temperature ±(1.0％＋0.005Ω) Test temp：-55℃～+125℃ 5cycle
Damp heat, steady state ±(3.0％＋0.005Ω) 40℃，93％(Relative humidity)
Test time：1,000h
Endurance at 70℃±(3.0％＋0.005Ω)
70℃,Rated voltage
1.5h:ON－0.5h:OFF
Test time：1,000h
Endurance ±(3.0％＋0.005) 155℃
Test time：1,000h
Resistance to solvent ±(0.5％＋0.005Ω) 23±5℃, Immersion cleaning, 5±0.5min
Solvent: 2-propanol
Bend strength of
the end face plating Without open. -
*Please contact us for guarantee of the test conditions other than those described above. Compliance Standard(s) : IEC60115-8
JISC 5201-8
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c 2016 ROHM Co., Ltd. All rights reserved. 3/4 2015.01 - Rev.E
UCR series Datasheet
●Tape dimensions (Unit : mm)
■Paper tape Part No. W F E A0 B0
UCR006
8.0±0.3 3.5±0.05 1.75 ±0.1 0.39±0.1 0.7 ±0.1
UCR01
8.0±0.3 3.5±0.05 1.75 ±0.1 0.7 ±0.1 1.2±0.10
UCR03
8.0±0.3 3.5±0.05 1.75 ±0.1 1.1 ±0.1 1.9±0.1
UCR10
+0.2 +0.2
8.0±0.3 3.5 ±0.05 1.75 ±0.1 1.65 2.4
-0.1 -0.1
UCR18
+0.1 +0.15
8.0±0.3 3.5 ±0.05 1.75 ±0.1 1.95 3.5
-0.05 -0.05
Part No. D0 P0 P1 P2 T2
UCR006
+0.1
Φ1.5 4.0±0.1 2.0 ±0.05 2.0±0.05 MAX0.46
0
UCR01
+0.1
Φ1.5 4.0±0.1 2.0 ±0.05 2.0±0.05 MAX1.1
0
UCR03
+0.1
Φ1.5 4.0±0.1 4.0 ±0.05 2.0±0.05 MAX1.1
0
UCR10
+0.1
Φ1.5 4.0±0.1 4.0 ±0.1 2.0±0.05 MAX1.1
0
UCR18
+0.1
Φ1.5 4.0±0.1 4.0 ±0.1 2.0±0.05 MAX1.1
0
●Reel dimensions
(Unit : mm)
Part No. A B C D
UCR006
UCR01 0 +1.0 +1.0
UCR03 Φ180 Φ60 9 Φ13±0.2
UCR10 -1.5 0 0
UCR18
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c 2016 ROHM Co., Ltd. All rights reserved. 4/4
2015.01 - Rev.E
Datasheet
Notice
Precaution on using ROHM Products
1. If you intend to use our Products in devices requiring extremely high reliability (such as medical equipment(Note 1),
aircraft/spacecraft, nuclear power controllers, etc.) and whose malfunction or failure may cause loss of human life,
bodily injury or serious damage to property (“Specific Applications”), please consult with the ROHM sales
representative in advance. Unless otherwise agreed in writing by ROHM in advance, ROHM shall not be in any way
responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of
any ROHM’s Products for Specific Applications.
(Note1) Medical Equipment Classification of the Specific Applications
JAPAN USA EU CHINA
CLASSⅢCLASSⅢCLASSⅡbCLASSⅢ
CLASSⅣCLASSⅢ
2. ROHM designs and manufactures its Products subject to strict quality control system. However, semiconductor
products can fail or malfunction at a certain rate. Please be sure to implement, at your own responsibilities,
adequate safety measures including but not limited to fail-safe design against the physical injury, damage to any
property, which a failure or malfunction of our Products may cause. The following are examples of safety measures:
[a] Installation of protection circuits or other protective devices to improve system safety
[b] Installation of redundant circuits to reduce the impact of single or multiple circuit failure
3. Our Products are not designed under any special or extraordinary environments or conditions, as exemplified below.
Accordingly, ROHM shall not be in any way responsible or liable for any damages, expenses or losses arising from
the use of any ROHM’s Products under any special or extraordinary environments or conditions. If you intend to use
our Products under any special or extraordinary environments or conditions (as exemplified below), your
independent verification and confirmation of product performance, reliability, etc, prior to use, must be necessary:
[a] Use of our Products in any types of liquid, including water, oils, chemicals, and organic solvents
[b] Use of our Products outdoors or in places where the Products are exposed to direct sunlight or dust
[c] Use of our Products in places where the Products are exposed to sea wind or corrosive gases, including
Cl2, H2S, NH3, SO2, and NO2
[d] Use of our Products in places where the Products are exposed to static electricity or electromagnetic waves
[e] Use of our Products in proximity to heat-producing components, plastic cords, or other flammable items
[f] Sealing or coating our Products with resin or other coating materials
[g] Use of our Products without cleaning residue of flux (even if you use no-clean type fluxes, cleaning residue
of flux is recommended); or Washing our Products by using water or water-soluble cleaning agents for
cleaning residue after soldering
[h] Use of the Products in places subject to dew condensation
4. The Products are not subject to radiation-proof design.
5. Please verify and confirm characteristics of the final or mounted products in using the Products.
6. In particular, if a transient load (a large amount of load applied in a short period of time, such as pulse. is applied,
confirmation of performance characteristics after on-board mounting is strongly recommended. Avoid applying power
exceeding normal rated power; exceeding the power rating under steady-state loading condition may negatively
affect product performance and reliability.
7. De-rate Power Dissipation (Pd) depending on Ambient temperature (Ta). When used in sealed area, confirm the
actual ambient temperature.
8. Confirm that operation temperature is within the specified range described in the product specification.
9. ROHM shall not be in any way responsible or liable for failure induced under deviant condition from what is defined
in this document.
Precaution for Mounting / Circuit board design
1. When a highly active halogenous (chlorine, bromine, etc.) flux is used, the residue of flux may negatively affect
product performance and reliability.
2. In principle, the reflow soldering method must be used on a surface-mount products, the flow soldering method must
be used on a through hole mount products. If the flow soldering method is preferred on a surface-mount products,
please consult with the ROHM representative in advance.
For details, please refer to ROHM Mounting specification
Notice-PAA-E
c 2016 ROHM Co., Ltd. All rights reserved.
Rev.001
Datasheet
Precautions Regarding Application Examples and External Circuits
1. If change is made to the constant of an external circuit, please allow a sufficient margin considering variations of
the characteristics of the Products and external components, including transient characteristics, as well as static
characteristics.
2. You agree that application notes, reference designs, and associated data and information contained in this
document are presented only as guidance for Products use. Therefore, in case you use such information, you are
solely responsible for it and you must exercise your own independent verification and judgment in the use of such
information contained in this document. ROHM shall not be in any way responsible or liable for any damages,
expenses or losses incurred by you or third parties arising from the use of such information.
Precaution for Electrostatic
This Product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. Please take
proper caution in your manufacturing process and storage so that voltage exceeding the Products maximum rating will
not be applied to Products. Please take special care under dry condition (e.g. Grounding of human body / equipment /
solder iron, isolation from charged objects, setting of Ionizer, friction prevention and temperature / humidity control).
Precaution for Storage / Transportation
1. Product performance and soldered connections may deteriorate if the Products are stored in the places where:
[a] the Products are exposed to sea winds or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2
[b] the temperature or humidity exceeds those recommended by ROHM
[c] the Products are exposed to direct sunshine or condensation
[d] the Products are exposed to high Electrostatic
2. Even under ROHM recommended storage condition, solderability of products out of recommended storage time
period may be degraded. It is strongly recommended to confirm solderability before using Products of which
storage time is exceeding the recommended storage time period.
3. Store / transport cartons in the correct direction, which is indicated on a carton with a symbol. Otherwise bent
leads may occur due to excessive stress applied when dropping of a carton.
4. Use Products within the specified time after opening a humidity barrier bag. Baking is required before using
Products of which storage time is exceeding the recommended storage time period.
Precaution for Product Label
QR code printed on ROHM Products label is for ROHM’s internal use only.
Precaution for Disposition
When disposing Products please dispose them properly using an authorized industry waste company.
Precaution for Foreign Exchange and Foreign Trade act
Since concerned goods might be fallen under listed items of export control prescribed by Foreign exchange and
Foreigntrade act, please consult with ROHM in case of export.
Precaution Regarding Intellectual Property Rights
1. All information and data including but not limited to application example contained in this document is for
reference only. ROHM does not warrant that foregoing information or data will not infringe any intellectual property
rights or any other rights of any third party regarding such information or data.
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or any third parties with respect to the Products or the information contained in this document. Provided, however,
that ROHM will not assert its intellectual property rights or other rights against you or your customers to the extent
necessary to manufacture or sell products containing the Products, subject to the terms and conditions herein.
Other Precaution
1. This document may not be reprinted or reproduced, in whole or in part, without prior written consent of ROHM.
2. The Products may not be disassembled, converted, modified, reproduced or otherwise changed without prior
written consent of ROHM.
3. In no event shall you use in any way whatsoever the Products and the related technical information contained in
the Products or this document for any military purposes, including but not limited to, the development of
mass-destruction weapons.
4. The proper names of companies or products described in this document are trademarks or registered trademarks
of ROHM, its affiliated companies or third parties.
Notice-PAA-E
c 2016 ROHM Co., Ltd. All rights reserved.
Rev.001
Datasheet
General Precaution
1. Before you use our Pro ducts, you are requested to care fully read this document and fully understand its contents.
ROHM shall not be in any way responsible or liable for failure, malfunction or accident arising form the use of any
ROHM’s Products against warning, caution or note contained in this document.
2. All information contained in this document not is current as of the issuing date and subject to change without any
prior notice. Before purchasing or using ROHM’s Products, please confirm the la test information with a ROHM
sales representative.
3. The information contained in this document is provided on an “as in” basis and ROHM does not warrant that all
information contained in this document is accurate and/or error-free. ROHM shall not be in any way responsible or
liable for any damages, expenses or losses incurred by you or third parties resulting form inaccuracy or errors of
or concerning such information.
Notice – WE
c 2016 ROHM Co., Ltd. All rights reserved.
Rev.001
